The Garrison of Lisbon revolts against King John VI, and recognises
his younger son, Dom Miguel, as ruler of Portugal.
Citation:
Editors. "Garrison of Lisbon revolts against John VI".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17850, accessed 21 May 2013.]